Double walled hollow column



FIG. 1 is a top plan view;

FIG. 2 is a side elevational view, the double walled hollow column isbroken in the center to disclose indeterminate length;

FIG. 3 is a sectional view taken along line 3--3 of FIG. 1; and,

FIG. 4 is a perspective view.

The ornamental design for a double walled hollow column, as shown and described. 